Definitions from Wiktionary ( )

▸ adjective:  Having an acrid taste (usually from a basic substance).
▸ adjective:  Harsh, piercing or stinging.
▸ adjective:  Hateful or hostile.
▸ adjective:  Cynical and resentful.
▸ noun:  (usually in the plural bitters) A liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.
▸ noun:  A type of beer heavily flavored with hops.
▸ noun:  (nautical) A turn of a cable about the bitts.
▸ verb:  To make bitter.
▸ noun:  (computing, informal, in combination) A hardware system whose architecture is based around units of the specified number of bits (binary digits).

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